A community for students.
Here's the question you clicked on:
 0 viewing
 2 years ago
Find the area of an equilateral triangle with side of length 18. (Round your answer to one decimal place.)
 2 years ago
Find the area of an equilateral triangle with side of length 18. (Round your answer to one decimal place.)

This Question is Closed

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.1Area= 1/2 base x height tan(60)=h/18 h=18tan(60) right?

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.1should i be using law of sines

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1why use law of sines?

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1wait...by law of sines do you mean \[\frac{a}{\sin A} = \frac b{\sin B} = \frac c{\sin C}\]

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.1yes, i have three angles (60) and three sides) so the how would i then find the height

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1use pythagorean theorem...you have equilateral triangle dw:1352707222314:dw

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1so the height would cut your triangle into two equal parts..dw:1352707262694:dw can you see how to get the height now?

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1now use your 1/2 bh

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1by the way.. you can also use your solution a while ago... 18tan (60) you don't need law of sines...just use a calculator for that

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.1and that solution from earlier would then give me the height?

lgbasallote
 2 years ago
Best ResponseYou've already chosen the best response.1hmm wait...something's wrong with it...let me find it first

ludwig457
 2 years ago
Best ResponseYou've already chosen the best response.1should it be 9 instead of 18
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.